Shock absorber



FIG. 1 is a perspective view of a shock absorber, showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a back view thereof, the front view being a mirror image thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a second perspective view thereof. 

CLAIM The ornamental design for a shock absorber, as shown and described. 